Device for surgical operations on a prolapse

Abstract

A device for surgical operations on a prolapse, comprising a hollow stretcher body ( 2 ) having a prevalent development direction along a longitudinal axis (A) and being insertable in an orifice, the stretcher body ( 2 ) exhibiting a through-window ( 7 ), defining an area of intervention and realising a communication between an internal cavity ( 3 ) of the stretcher body ( 2 ) and a portion of a prolapse, a mobile wall ( 8 ) defining the through-window ( 7 ) in combination with the stretcher body ( 2 ) and being slidably associated to the stretcher body ( 2 ) in order to open and/or close the through window ( 7 ) between a configuration of minimum extension and a configuration of maximum extension of the through-window ( 7 ); characterized in that it comprises means for blocking ( 10 ) which act between the mobile wall ( 8 ) and the stretcher body ( 2 ) in order to maintain the through-window ( 7 ) stably in the configuration of minimum extension during insertion of the stretcher body ( 2 ).

The invention claimed is: 
     
       1. A device for surgical operations on a prolapse, comprising:
 a hollow stretcher body having a prevalent development direction along a longitudinal axis and being insertable in an orifice, the stretcher body having a closed front portion and exhibiting a lateral through-window, defining an area of intervention and adapted to realize a communication between an internal cavity of the stretcher body and a portion of a prolapse, 
 a mobile wall defining the through-window in combination with the stretcher body and being slidably associated to the stretcher body in order to open and close the through-window between a configuration of minimum extension and a configuration of maximum extension of the through-window, 
 wherein the mobile wall is movable according to a plurality of intermediate positions corresponding to intermediate configurations of the through window between the minimum and the maximum extensions of the through window; 
 wherein the through window develops along the longitudinal axis of the stretcher body and the mobile wall is movable along the longitudinal axis of the stretcher body in such a way as to vary the extension of the through window in a direction parallel to the longitudinal axis of the stretcher body; 
 
       wherein the device comprises means for blocking which acts between the mobile wall and the stretcher body in order to maintain the through-window stably in the configuration of minimum extension during insertion of the stretcher body, 
       wherein the blocking means comprises at least one appendage which is elastically associated to the mobile wall and which is insertable and extractable by a snap-fit in a corresponding seating afforded in the stretcher body;
 wherein the device comprises two guides afforded in the stretcher body and two skates connected to respective opposite sides of the mobile wall and slidable in the guide; the at least one appendage comprising two appendages, each associated to a respective skate, and wherein the device further comprises two seatings, each of which is occupiable by a respective appendage; and 
 wherein each skate comprises a fixed portion which is rigidly connected to the mobile wall and a projecting portion which projects from the fixed portion towards a front end of the stretcher body; each appendage being arranged on the projecting portion. 
 
     
     
       2. The device of  claim 1 , wherein each seating is aligned to a respective guide and is separated therefrom by a relief. 
     
     
       3. The device of  claim 1 , wherein each guide comprises at least one wall which is perpendicular to a central plane of symmetry and which defines a flat surface on which the skate rests. 
     
     
       4. The device of  claim 3 , wherein each guide further comprises a further wall facing and parallel to the wall; each skate being inserted between its respective wall and the further wall. 
     
     
       5. The device of  claim 4 , wherein each guide further comprises a respective rib developing from a posterior end of the stretcher body parallel to the wall and to the further wall, lying in contact with the skate in order to maintain the mobile wall aligned to the stretcher body. 
     
     
       6. The device of  claim 1 , wherein one of the two skates exhibits a tooth, destined to abut against a corresponding guide in order to compensate for any coupling tolerances between the skates and the guides. 
     
     
       7. The device of  claim 1 , wherein the device further comprises anti-twist means operatively arranged between the stretcher body and the mobile wall in order to limit a torque deformation of the device; the anti-twist means being arranged at a posterior end of the stretcher body and being active in the configuration of minimum extension of the through-window. 
     
     
       8. The device of  claim 7 , wherein the anti-twist means comprises at least one projection associated to the mobile wall and insertable in a corresponding opening afforded on the stretcher body. 
     
     
       9. The device of  claim 8 , wherein the at least one projection comprises two projections insertable in corresponding openings arranged symmetrically with respect to a plane of symmetry of the device. 
     
     
       10. The device of  claim 9 , wherein the stretcher body comprises two tabs arranged in proximity of the posterior end and symmetrically with respect to the plane of symmetry on which the openings are respectively afforded. 
     
     
       11. The device of  claim 9 , wherein the mobile wall comprises two flanges arranged symmetrically with respect to the central plane of symmetry on which the projections are arranged. 
     
     
       12. The device of  claim 1 , wherein the mobile wall comprises a gripping organ extending on an opposite side with respect to the stretcher body for gripping and displacing the mobile wall with respect to the stretcher body. 
     
     
       13. The device of  claim 1 , wherein the device further comprises a grip, fixed to the stretcher body, the grip defining internally thereof a seating for housing a means for illuminating. 
     
     
       14. The device of  claim 1 , wherein the mobile wall comprises a housing for removably containing sensors for detecting a vicinity of a haemorrhoidal artery. 
     
     
       15. A device for surgical operations on a prolapse, comprising:
 a hollow stretcher body having a prevalent development direction along a longitudinal axis and being insertable in an orifice, the stretcher body having a closed front portion and exhibiting a lateral through-window, defining an area of intervention and adapted to realize a communication between an internal cavity of the stretcher body and a portion of a prolapse, 
 a mobile wall defining the through-window in combination with the stretcher body and being slidably associated to the stretcher body in order to open and close the through-window between a configuration of minimum extension and a configuration of maximum extension of the through-window, 
 wherein the mobile wall is movable according to a plurality of intermediate positions corresponding to intermediate configurations of the through window between the minimum and the maximum extensions of the through window; 
 wherein the through window develops along the longitudinal axis of the stretcher body and the mobile wall is movable along the longitudinal axis of the stretcher body in such a way as to vary the extension of the through window in a direction parallel to the longitudinal axis of the stretcher body; 
 wherein the device comprises means for blocking which acts between the mobile wall and the stretcher body in order to maintain the through-window stably in the configuration of minimum extension during insertion of the stretcher body; 
 wherein the blocking means comprise at least one appendage which is elastically associated to the mobile wall and which is insertable and extractable by a snap-fit in a corresponding seating afforded in the stretcher body; 
 wherein the device comprises two guides afforded in the stretcher body and two skates connected to respective opposite sides of the mobile wall and slidable in the guide; the at least one appendage comprising two appendages, each associated to a respective skate, and wherein the device further comprises two seatings, each of which is occupiable by a respective appendage; and 
 wherein one of the two skates exhibits a tooth, destined to abut against a corresponding guide in order to compensate for any coupling tolerances between the skates and the guides. 
 
     
     
       16. A device for surgical operations on a prolapse, comprising:
 a hollow stretcher body having a prevalent development direction along a longitudinal axis and being insertable in an orifice, the stretcher body having a closed front portion and exhibiting a lateral through-window, defining an area of intervention and adapted to realize a communication between an internal cavity of the stretcher body and a portion of a prolapse, 
 a mobile wall defining the through-window in combination with the stretcher body and being slidably associated to the stretcher body in order to open and close the through-window between a configuration of minimum extension and a configuration of maximum extension of the through-window, 
 wherein the mobile wall is movable according to a plurality of intermediate positions corresponding to intermediate configurations of the through window between the minimum and the maximum extensions of the through window; 
 wherein the through window develops along the longitudinal axis of the stretcher body and the mobile wall is movable along the longitudinal axis of the stretcher body in such a way as to vary the extension of the through window in a direction parallel to the longitudinal axis of the stretcher body; 
 wherein the device comprises means for blocking which acts between the mobile wall and the stretcher body in order to maintain the through-window stably in the configuration of minimum extension during insertion of the stretcher body, 
 wherein the blocking means comprises at least one appendage which is elastically associated to the mobile wall and which is insertable and extractable by a snap-fit in a corresponding seating afforded in the stretcher body; 
 wherein the device further comprises anti-twist means operatively arranged between the stretcher body and the mobile wall in order to limit a torque deformation of the device; the anti-twist means being arranged at a posterior end of the stretcher body and being active in the configuration of minimum extension of the through-window; 
 wherein the anti-twist means comprises two projections associated to the mobile wall and insertable in corresponding openings afforded on the stretcher body and arranged symmetrically with respect to a plane of symmetry of the device; and 
 wherein the stretcher body comprises two tabs arranged in proximity of the posterior end and symmetrically with respect to the plane of symmetry on which the openings are respectively afforded. 
 
     
     
       17. A device for surgical operations on a prolapse, comprising:
 a hollow stretcher body having a prevalent development direction along a longitudinal axis and being insertable in an orifice, the stretcher body having a closed front portion and exhibiting a lateral through-window, defining an area of intervention and adapted to realize a communication between an internal cavity of the stretcher body and a portion of a prolapse, 
 a mobile wall defining the through-window in combination with the stretcher body and being slidably associated to the stretcher body in order to open and close the through-window between a configuration of minimum extension and a configuration of maximum extension of the through-window, 
 wherein the mobile wall is movable according to a plurality of intermediate positions corresponding to intermediate configurations of the through window between the minimum and the maximum extensions of the through window; 
 wherein the through window develops along the longitudinal axis of the stretcher body and the mobile wall is movable along the longitudinal axis of the stretcher body in such a way as to vary the extension of the through window in a direction parallel to the longitudinal axis of the stretcher body; 
 wherein the device comprises means for blocking which acts between the mobile wall and the stretcher body in order to maintain the through-window stably in the configuration of minimum extension during insertion of the stretcher body; 
 wherein the blocking means comprises at least one appendage which is elastically associated to the mobile wall and which is insertable and extractable by a snap-fit in a corresponding seating afforded in the stretcher body; 
 wherein the device further comprises anti-twist means operatively arranged between the stretcher body and the mobile wall in order to limit a torque deformation of the device; the anti-twist means being arranged at a posterior end of the stretcher body and being active in the configuration of minimum extension of the through-window; 
 wherein the anti-twist means comprises two projections associated to the mobile wall and insertable in corresponding openings afforded on the stretcher body and arranged symmetrically with respect to a plane of symmetry of the device; and 
 wherein the mobile wall comprises two flanges arranged symmetrically with respect to the central plane of symmetry on which the projections are arranged.